Cultivator shield



Nov. 3, 1953 F. E. KNUTH CULTIVATOR SHIELD Filed D96. 26, 1951 Fred E. Knuth INVENTOR. 4015-2". WW M518]:

fiatented Nov. 3, i953 UNITED STATES FATENT OFFICE CULTIVATOR SHIELD Fred E. Knuth, Utica, Nebr.

Application December 26, 1951, Serial No. 263,189

This invention relates to new and useful improvements in shields for lister cultivators and the primary object of the present invention is to provide an adjusting means between a pair of hingedly connected shield sections.

Another important object of the present invention is to provide a cultivator shield having an improved gauge bar mounting means over that disclosed in my United States Patent Number 1,987,403 issued January 8, 1935.

A further object of the present invention is to provide a cultivator shield including a pair of hingedly connected sections, forward and rear frame members pivotally connecting the sections, and spring urged gauge bars slidably supported on the frame members and adjustably connected at their ends to the sections.

A still further aim of the present invention is to provide a cultivator shield of the aforementioned character that is simple and practical in construction; strong and reliable in use; small and compact in structure; easily assembled, disassembled or adjusted; inexpensive to manufacture, and otherwise well adapted for the purposes for which the same is intended.

Other objects, features and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a rear elevational view of the shield and fragmentarily showing a cultivator;

Figure 2 is a side elevational view of Figure 1;

Figure 3 is a plan view of the present shield;

Figure 4 is a vertical sectional view taken substantially on the plane of section line 4-4 of Figure 2; and,

Figure 5 is a perspective view of one of the gauge bars used in the present invention.

Referring now to the drawings in detail, wherein for the purpose of illustration, there is disclosed a preferred embodiment of the present invention, the numeral It represents a pair of shield forming sections or side members having upwardly and inwardly curved portions that are formed with depending flanges l2. Flanges [2 are formed with apertures that receive fasteners I 4 hingedly connecting the sections, it being understood that the apertures are sufficiently large to permit rocking movement of the sections I0.

Forward and rear vertical arms I6 and I8 are fixed at their lower ends to the forward and rear end portions respectively of the sections [0. The

2 Claims. (01. 97-188) upper ends of these arms extend upwardly well beyond the shields and are formed with vertical slots 21] for a purpose presently to be more fully described.

Forward and rear similar inverted U-shaped frame members 22 extend transversely over the sections l 53. These frame members 22 are formed with outwardly extending end portions 24 terminating in hooks 25 that engage eyes 28 suitably attached to the central portions of the arms l6, I8. The hooks of the forward frame member being pivotally engaged with the eyes of the forward arms, whereas the hooks of the rear frame member are pivotally engaged with the eyes of the rear arms.

Forward and rear vertical bolts 39 and 32 are fixed by welding or the like to the web portions of the frame members. The upper threaded ends of the bolts extend upwardly through the centrally apertured horizontal flanges of angulated forward and rear gauge bars 33 and 35. The bars 35 and 36 are formed with end portions having spaced notches 33 in their lower edges. The end portions of bar 34 extend through the slots of the forward arms and the end portions of the rear bar 36 extend through the slots in the rear arms.

Wing nuts 40 are threaded on the upper ends of the bolts and coil springs 42 on the upper ends of the bolts are biased between the nuts and the horizontal flanges of the bars to yieldingly retain a notch in each end portion of the bars in their corresponding slot, as shown in Figure 4. In this manner, the lower end portions of the sections ill may be adjusted toward or away from each other.

The rearwardly extending draft arm A of a cultivator shield support is removably secured in the U-shaped frame members by fasteners 46 to support the shield between and along side of a pair of spaced lister disks or plow elements P. Arm A is suspended by a chain C from the usual rearwardly extending hydraulically raisable or lowerable arm Al of a cultivator, whereby the shield may be raised or lowered.

Having described the invention, what is claimed as new is:

1. A cultivator shield comprising a pair of hingedly connected sections having forward and rear end portions, a forward pair of vertical arms fixed to the forward end portions of the sections, a rear pair of arms fixed to the rear end portions of the sections, said arms each having an upper end with a vertical slot therein, forward and rear substantially U-shaped inverted frame members having their ends pivoted to the forward. and rear arms respectively, a, bolt fixed to and extending upwardly from each frame member, forward and rear gauge bars extending between the forward and rear arms, the ends of the forward bar being received in the slots in the forward arms and the ends of the rear bar bein received in the slots in the rear arms, the ends of said bars having spaced notches in their lower edges for selectively receiving the lower edges of the slots they are received in, said bars having central apertures receiving the upper ends of the bolts, coil springs on the upper ends of the bolts engaging the bars to retain the bars en-- gaged with the arms, and nuts threaded on the upper ends of the bolts forming abutments for the springs,

2. The combination of claim 1 wherein each of said gauge bars includes an offset central portion and a flat Wall formed with said offset portion and having the apertures therein.

FRED E. KNUTI-I.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,870,910 Hughes Aug. 9, 1932 1,987,403 Knuth Jan. 8, 1935 

